Firstly, this isn't a negative post about ldopa supplements or mucuna. In fact, I have several containers of both.
There's a number of articles and studies online that are quite positive about mucuna as a prescription levodopa alternative. Here's one that was posted in a recent thread: healthunlocked.com/api/redi...
(Note: some of the conclusions in that paper are not universal across all the papers, notably the one re dyskinesia. But it provides decent background).
One of the key takeaways from everything I have read re mucuna is that mucuna seeds are only about 4 to 9% ldopa. Which means they are 91 to 96% other stuff, which the studies seem to speculate provide some benefit:
"In the treatment of Parkinson’s disease, some results in groups of patients and in experimental animals show that, apart from natural levodopa, Mucuna pruriens has other ingredients that show outstanding features. It must contain other substances that improve the absorption of levodopa and metabolic efficiency, as explained below.
To date, 50 substances have been identified in the powder of its seeds [2]. Other still unidentified components must exist in Mucuna, such as portions or mixtures of alkaloids, proteins, peptides, polysaccharides, glycosides, glycoproteins, and several phytochemicals including tryptamine, alanine, arginine, glutathione, isoquinolone, mucunine, nicotine, prurienine, serotonin, tyrosine, etc.,"
The point here is that if you are using a 99% ldopa product (the one I have and is regularly mentioned here is the one from nutravitashop.com), you are not getting any of these other substances that are speculated to provide some benefit.
I haven't yet read a study where the mucuna used is a 99% ldopa extract.
In summary: if you are chasing the benefits of mucuna you may have read about, it is worth considering whether the product you are using or considering using accurately reflects the preparations used in the studies where those benefits were observed.
Again, I'm not negative about any of these products. If you are using 99 ldopa supplements with good results then I'm not suggesting you change that. I just think that, with mucuna threads here every couple of days, it is a worthwhile distinction.